In this correspondence, we propose a general framework for studying a
class of weighted highpass tilters. Our framework, based on a multisca
le signal decomposition, allows us to study a wide class of filters an
d to assess the merits of each. We derive an automatic procedure to tu
ne a filter to the local structure of the image under consideration. T
he entire algorithm is fully automatic and requires no parameter speci
fication from the user. Several simulations demonstrate the efficacy o
f the proposed algorithm.